Fisher 3660 Instruction Manual page 35

Instruction Manual
D101402X012
Figure 24. Fisher 3660 Positioner Assembly
VIEW D‐D
WITHOUT GAUGES
51B3944‐F
Key Description
19D Nut
19E Lever Sub‐assembly
Standard
For Baumann actuators
19F Zero Shaft
19G Slide Bearing (2 req'd)
19H Housing Bushing
19J Retaining Ring
19K Disc
19L O‐ring
19M O‐ring
19N Spring
19P Retaining Screw
19Q Retaining Ring
19R Roll Pin
19S Zero Adjust Screw
19T Cover
19U Cover Screw
21 Cover assembly, aluminum
24 Machine screw, stainless steel (2 req'd)
26* O‐ring, EPDM (2 req'd for 3660;
3 req'd for 3661)
*Recommended spare parts
D
D
SECTION C‐C
Key Description
27* O‐ring, EPDM (2 req'd)
28* Diaphragm assembly, aluminum
3660 and 3661
0.2 to 1.0 bar (3 to 15 psig)
3660 only, 0.4 to 2.0 bar (6 to 30 psig)
29* Output diaphragm assembly, aluminum
30 Range spring, N09902 nickel alloy
Standard
Split range
For Baumann actuators
32 Nameplate, A91100
33 Ground terminal for 3661 (2 req'd)
34 Cable gland for 3661, plastic
35 I/P restrictor ass'y for 3661, aluminum
36 Pipe plug for 3661, stainless steel
37 Machine screw, stainless steel
3660 and 3661 Positioners
September 2015
35